Prepare Your Coneflowers For Winter Before First Frost Most Gardeners Get This Wrong, by Backyard Roots on YouTube. 22 min 3 s.
- Video length
- 22 min 3 s
- Time to do it
- 30 minutes
- Difficulty
- Easy
- Steps
- 8
What you need
Steps
Wait until the first hard frost has blackened the foliage. Leave the seed heads standing through fall so birds can feed and the plant can harden off.
Look at each flower head before you cut. A green, firm cone means the plant is still working. A dry, brown cone that crumbles means it is dormant and ready to cut back.
Cut stems back to about 2 to 3 inches above the crown. Do not cut flush with the soil, and do not leave tall hollow stubs that hold water.
Check the crown, the point where stems meet the roots. Pull away soggy leaves and debris sitting on top of it. A buried or wet crown is the main cause of winter rot.
Skip fall fertilizer. Feeding now pushes soft new growth that frost kills. Stop feeding about six weeks before your first frost date.
Water only if the soil is dry a few inches down. Cold, wet soil plus a wet crown rots the plant. Let fall rain do the work in most regions.
Mulch lightly around the plant, keeping mulch 2 to 3 inches away from the crown itself. A thin layer of leaves or straw is enough. Do not bury the crown.
Divide only if the plant is crowded or flowering poorly in the center. Do it in early spring, not fall, so the new divisions have a full season to root.
Tips and common mistakes
More care kills more coneflowers than neglect. Watering, feeding and heavy mulch in fall are the usual culprits.
Never pile mulch over the crown. Keep it around the plant, not on top of it.
Leave some seed heads standing if you want birds and self-seeding.
When buying plants, check for a firm crown and healthy roots before you fall for the flowers.
Questions
Should I cut back coneflowers in fall or spring?
Either works in most zones. Cutting back after a hard frost is fine, but leaving stems until early spring feeds birds and protects the crown. Just avoid tall wet stubs over winter.
Why did my coneflowers not come back this spring?
The most common cause is a wet, buried crown that rotted over winter. Fall fertilizer and heavy mulch make it worse. Check the crown and improve drainage before replanting.
Do coneflowers need winter protection?
In most cold zones they are hardy on their own. A light mulch around the plant helps in very cold or exposed spots, but keep it off the crown.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
